The science of physics studies many topics, from the gravity holding planets together to electromagnetism and the microscopic forces inside the heart of the atom. Each of these forces works by different rules, some of which contradict each other. For centuries, scientists have sought a single theory that would unify these disparate fields and provide one equation from which we can derive a complete understanding of the universe. In The God Equation, theoretical physicist Michio Kaku suggests that an approach called "string theory" may be the path to uniting all the different laws of nature.

In this guide, we’ll trace the history of discoveries that unify areas of knowledge and reveal the underlying symmetries of nature. We’ll delve into string theory and define terms and concepts to give readers an understanding of the topic. We’ll discuss research to support string theory’s claims, and we’ll touch on the philosophical implications that a theory of the universe entails.

Can you become wealthy, practice self-improvement, and make the world a better place all at once? In Thou Shall Prosper, Orthodox Jewish Rabbi Daniel Lapin teaches you how to do exactly that by following what he calls the "Ten Commandments" of making money. Lapin blends modern economics lessons and business advice with traditional Jewish wisdom to create a text that’s half business guide and half self-help book.

In this guide, we’ll explore ancient rabbis’ views on conducting business, how you can build and lead your own business, and how earning money can be a spiritual pursuit. In our commentary, we’ll provide background information about Judaism to make Lapin’s teachings more accessible. We’ll also compare Lapin’s ideas with those in secular books on similar topics, such as Limitless by Jim Kwik and Start With Why by Simon Sinek.

Brené Brown believes that the key to fulfillment is pursuing wholeheartedness—a way of life that fosters self-worth and emphasizes being brave, caring for yourself and others, and cultivating meaningful relationships. Living wholeheartedly requires you to embrace and express your authentic self. However, doing so makes you vulnerable—you may face painful experiences like rejection, loss, and heartbreak. If left unaddressed, these experiences cause emotional setbacks that can keep you from living wholeheartedly. In Rising Strong, Brown explains that to rebuild wholeheartedness after setbacks, you must recover emotionally.

In this guide, we’ll start by explaining why it’s important to take control of your recovery. Then, we’ll explore the three stages of Brown’s recovery process—confronting your strong feelings, exploring why they occurred, and identifying how you can change your thoughts and behaviors to cultivate resilience and rebuild wholeheartedness. In our commentary, we’ll add context to Brown’s research and advice, referencing books like Hans Rosling’s Factfulness and Emily and Amelia Nagoski’s Burnout.

Imagine you have a product or service that can change people’s lives—one that can help them reach their most ambitious goals financially or personally. If you don’t know how to effectively market it, your idea won’t make a difference in anyone’s life. Russell Brunson, who made his name selling online marketing tools and advising startups on building a brand, aims to solve this problem with Expert Secrets, a how-to guide for creating excitement for your idea that turns potential customers into lifelong buyers.

In this guide, we’ll give an overview of the main "secrets" Brunson discusses, focusing on how you can tap into your audience’s emotions to create loyal customers. Along the way, we’ll examine the human instincts that drive purchasing decisions and how other sales experts advise you to close a sale.

The Master Guide series is an original Shortform exclusive. We integrate the advice from every major book on a topic into a single, authoritative guide.

Does the thought of speaking in front of an audience make you anxious? You’re not alone: Many people say they fear public speaking even more than death. But public speaking is also one of the most important and widely applicable skills in life, and the good news is, anyone can master it. By learning proven skills and techniques, you can become an effective communicator and confidently deliver your message to an audience.

In Shortform’s Master Guide to public speaking, we’ve compiled leading experts’ insights on how to prepare and deliver your speech. Whether you want to persuade, inform, entertain, or motivate your audience, this guide will walk you through the process of crafting and delivering a powerful speech that captures your audience’s interest.

In Come As You Are, author Emily Nagoski uses scientific research and her years of experience as a sex educator to change the negative way that women talk, think, and feel about their sexuality due to years of misinformation and harmful cultural messaging surrounding sex. Arguing that a scientific perspective on sexuality can free women from unrealistic standards and help them to appreciate their individual experiences, Nagoski considers sexuality from every biological angle while dispelling cultural misconceptions along the way.

In this guide, we’ll follow Nagoski’s exploration of topics ranging from basic anatomy and the mechanics of sexual response to individual experiences of arousal, desire, and orgasm. As we discuss each of these concepts, we’ll compare Nagoski’s arguments to those of other experts in her field, discuss additional research on human sexuality, and add historical and cultural context to her ideas.

Most people would say that the opposite of fragility is durability—that is, resistance to damage. However, there’s a step beyond durable, which we could call antifragile. Something that’s antifragile actually becomes stronger when it’s damaged, like the mythical Hydra growing two heads when one is cut off.

In Antifragile, Nassim Nicholas Taleb explores how we can leverage antifragility to make the world’s uncertainty work in our favor. He provides examples of both fragile and antifragile systems ranging from the historical to the modern, and in areas ranging from politics and economics to the human body. The verdict is clear: Antifragility is necessary if we are to thrive.

When you’re unable or unwilling to say "no" to pressures in your life, your body may do it for you by creating illness. Many chronic illnesses have been linked to stress caused by our lifestyles, our conditioning as children, and our psychological coping mechanisms.

When the Body Says No is Dr. Gabor Maté’s exploration of the connection between stress and disease. Rather than just occasional external stress events, which are normal, Maté says that humans in modern society tend to experience chronic stress, which has a devastating effect on our bodies. He argues that much of our chronic stress is subconscious, so we may not even recognize it as stress.

This guide examines the research and theories Maté presents, as well as his prescriptions for healing and avoiding stress-related disease. We’ll expand on Maté’s ideas by looking at additional research and exploring what other experts have to say on the stress-disease connection.

Women have it rough. Our patriarchal society has a million expectations for how they should act, look, feel, and speak in any situation. And failure to meet these expectations equates to feeling like they aren’t "enough"—humble enough, generous enough, pretty enough, strong enough, and so on. The result? Physical, mental, and emotional burnout.

In Burnout, Amelia and Emily Nagoski explain how women can handle these stressors to avoid burnout and thrive. This guide will expose the patriarchal standards that cause female stress, explore how the body responds to this stress, and explain how you can handle stress before it leads to burnout. We’ll contextualize the authors’ arguments with research from social scientists. We’ll also supplement their recommendations with advice from self-help authors like Kelly McGonigal and Eckhart Tolle.

Do you struggle with bad habits? Do you try to create good habits that will bring positive changes to your life, but have trouble making them stick? In Atomic Habits, James Clear argues that adopting the right habits will drastically improve your life—but to do so, you must understand how habits work and how you can change yours.

In this guide, you’ll discover why habits matter and the three mindsets you can use to create them. You’ll then learn how habits form and the four keys to changing yours. Finally, you’ll learn how to continue improving habits you've implemented. Along the way, we’ll examine how other psychologists and experts approach habit formation, and we’ll explore how Clear’s theories either align with or differ from theirs.