Users who continually find value in a product are more likely to tell their friends about it.

Companies leverage two basic pulleys of human behavior to increase the likelihood of an action occuring: the ease of performing an action and the psychological motivation to do it.

Habit-forming products often start as nice-to-haves, but once the habit is formed, they become must-haves.

Instead of relying on expensive marketing, habit-forming companies link their services to the users' daily routines and emotions.

Reducing the thinking required to take the next action increases the likelihood of the desired behavior occurring unconsciously.

For an infrequent action to become a habit, the user must perceive a high degree of utility, either from gaining pleasure or avoiding pain.

Why not live now instead of someday?

Products with higher user engagement have the potential to grow faster than their rivals.

Like flossing, frequent engagement with a product, especially over a short period of time, increases the likelihood of forming new routines.

To initiate (user) action, doing must be easier than thinking.

Habit-forming products alleviate users' pain by relieving a pronounced itch.

The same hot lightning that burns your blood with passion–– cools your fears with peace.

My outstretched arms found hers, and I was home.

The closed mind is a disease. You need to have an open mind

It's amazing the clarity that comes with psychotic jealousy.

Our souls may all be equal in the sight of the Lord, but our gumption and ingenuity ain't. So the results of man's labor will never be equal.

I believe that the artist doesn't know what he does. I attach even more importance to the spectator than to the artist.

I feel like dying when I'm helpless

O divine art of subtlety and secrecy! Through you we learn to be invisible, through you inaudible and hence we can hold the enemy's fate in our hands.

Intellectual modesty is humility as to what I know; intellectual humility is modesty as to what I do not know