Ability to think, like the violin or piano, requires daily practice.

Few people think more than two or three times a year; I have made an international reputation for myself by thinking once or twice a week.

Think before you speak, your words could hurt someone's feeling more than you intended it to.

Paper is to write things down that we need to remember. Our brains are used to think.

I'm just a little bit sicker than the average individual I think.

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.