Years wrinkle the face, but to give up enthusiasm wrinkles the soul.

Compromise,n. Such an adjustment of conflicting interests as gives each adversary thesatisfaction of thinking he has got what he ought not to have, and isdeprived of nothing except what was justly his due.

One whodoes not look ahead remains behind.

Human beings are not perfectible. They are improvable.

Luck iswhat happens when preparation meets opportunity.

The difficultpart in an argument is not to defend one's opinion, but rather to know it.

The summit of happiness is reached when a person is ready to be what he is.

Our faults irritate us most when we see them in others.

There'sno point in arguing with partisan supporters. Their views are their identity.Nothing you can tell the most phlegmatic follower.

Too late is the medicine prepared, when the disease has strengthened by long delay.

The tormentof human frustration, whatever its immediate cause, is the knowledge that theself is in prison, its vital force and ‘mangled mind’ leaking away in lonely,wasteful self-conflict.

Peoplewho are too concerned with how well they are doing will be less successfuland feel less competent than those who focus on the task itself... Somepsychologists call it a conflict between egoorientation,or between extrinsic and intrinsic motivation…