Each generation has its few great mathematicians, and mathematics would not even notice the absence of the others. They are useful as teachers, and their research harms no one, but it is of no importance at all. A mathematician is great or he is nothing.

Exaggerated sensitiveness is an expression of the feeling of inferiority.

Far more unwaveringly, the neurotic keeps before his eye his God, his idol, his ideal of personality and clings to his guiding principle, losing sight in the meanwhile of reality, whereas the normal person is always ready to dispense with this crutch, this aid, and reckon unhampered with reality.

Courage is not an ability one either possess or lacks. Courage is the willingness to engage in a risk-taking behavior regardless of whether the consequences are unknown or possibly adverse. We are capable of courageous behavior provided we are willing to engage in it. Given that life offers few guarantees, all living requires risk-taking.

We are not determined by our experiences, but are self-determined by the meaning we give to them; and when we take particular experiences as the basis for our future life, we are almost certain to be misguided to some degree. Meanings are not determined by situations. We determine ourselves by the meanings we ascribe to situations.

Every neurotic is partly in the right.

I am grateful for the idea that has used me.