Those who tell you that man is unable to perceive a reality undistorted by his senses, mean that they are unwilling to perceive a reality undistorted by their feelings. "Things as they are" are things as perceived by your mind; divorce them from reason and they become "things as perceived by your wishes.

Don't think. Believe. Trust your heart, not your brain. Don't think. Feel. Believe.

Any refusal to recognize reality, for any reason whatever, has disastrous consequences. There are no evil thoughts except one: the refusal to think. Don't ignore your own desires.... Don't sacrifice them. Examine their cause. There is a limit to how much you should have to bear.

In a free society, one does not have to deal with those who are irrational. One is free to avoid them.

Those who grant sympathy to guilt, grant none to innocence.

To arrive at a contradiction is to confess an error in one's thinking; to maintain a contradiction is to abdicate one's mind and to evict oneself from the realm of reality.

The difference between animals and humans is that animals change themselves for the environment, but humans change the environment for themselves.