Life is thickly sown with thorns, and I know no ot...

What most persons consider as virtue, after the age of 40 is simply a loss of energy.

He who has not the spirit of this age, has all the misery of it.

We are rarely proud when we are alone.

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.

There is a fountain of youth: it is your mind, your talents, the creativity you bring to your life and the lives of people you love. When you learn to tap this source, you will truly have defeated age.

Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen.

Probably the happiest period in life most frequently is in middle age, when the eager passions of youth are cooled, and the infirmities of age not yet begun as we see that the shadows, which are at morning and evening so large, almost entirely disappear at midday.

Admiration of the proletariat, like that of dams, power stations, and aeroplanes, is part of the ideology of the machine age.

Those who improve with age embrace the power of personal growth and personal achievement and begin to replace youth with wisdom, innocence with understanding, and lack of purpose with self-actualization.

There are few things that we so unwillingly give up, even in advanced age, as the supposition that we still have the power of ingratiating ourselves with the fair sex.

If repression has indeed been the fundamental link between power, knowledge, and sexuality since the classical age, it stands to reason that we will not be able to free ourselves from it except at a considerable cost.