Self-trust is the first secret of success.

Don'tclose the barn door after the horse runs away.

Nature hasgiven men one tongue and two ears, that we may hear twice as much as wespeak.

The roots of education are bitter, but the fruit is sweet.

Dig a well before you are thirsty.

Never answer a letter while you are angry.

The pessimistsees difficulty in every opportunity. The optimist sees opportunity in everydifficulty.

It is a good reader that makes a good book.

The merit belongs to begineer; should his successor do even more better.

Philosophy may describe unreason, as it may describe force; it cannot hope to refute them.

Change meansmovement. Movement means friction. Only in the frictionless vacuum of anonexistent abstract world can movement or change occur without that abrasivefriction of conflict.

People whoare too concerned with how well they are doing will be less successful andfeel less competent than those who focus on the task itself... Somepsychologists call it a conflict between egoorientation, or between extrinsicand intrinsic motivation...