Three passions, simple but overwhelmingly strong, ...

To teach how to live without certainty and yet without being paralysed by hesitation is perhaps the chief thing that philosophy, in our age, can do for those who study it.

It is possible that mankind is on the threshold of a golden age but, if so, it will be necessary first to slay the dragon that guards the door, and this dragon is religion.

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

The really frightening thing about middle age is the knowledge that you'll grow out of it.

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.

We are approaching a new age of synthesis. Knowledge cannot be merely a degree or a skill... it demands a broader vision, capabilities in critical thinking and logical deduction without which we cannot have constructive progress.

We live in an age of instant knowledge. And there's almost a sense of entitlement to that.

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.

Age does not protect you from love. But love, to some extent, protects you from age.

Each moment of a happy lover's hour is worth an age of dull and common life.