Danh ngôn thuộc danh mục: brainy

Insanity: doing the same thing over and over again and expecting different results.

One can resist the invasion of an army but one cannot resist the invasion of ideas.

Challenging the meaning of life is the truest expression of the state of being human.

We can learn something new anytime we believe we can.

Judge a man by his questions rather than his answers.

Think for yourselves and let others enjoy the privilege to do so, too.

Nothing endures but personal qualities.

To be is to be the value of a variable.

A man must not deny his manifest abilities, for that is to evade his obligations.

If he who employs coercion against me could mould me to his purposes by argument, no doubt he would. He pretends to punish me because his argument is strong; but he really punishes me because his argument is weak.

Wit is the salt of conversation, not the food.

Be intent upon the perfection of the present day.

Be nice to people on your way up because you'll meet them on your way down.

We make a living by what we get, but we make a life by what we give.

Pesticides came about after the first world war. Some brainy petrochemical money maker said, 'Hey, that mustard gas worked great on people, maybe we could dilute it down and spray it on our crops to deal with pests.'

If you don't know where you are going, you might wind up someplace else.

We cling to our own point of view, as though everything depended on it. Yet our opinions have no permanence; like autumn and winter, they gradually pass away.