If, in New York, you arrive late for an appointment, say, "I took a taxi".

We owe to the Middle Ages the two worst inventions of humanity - romantic love and gunpowder.

Without a family, man, alone in the world, trembles with the cold.

The first recipe for happiness is: avoid too lengthy meditation on the past.

We can talk frankly about our defects only to those who recognise our qualities.

An artist must be a reactionary. He has to stand out against the tenor of the age and not go flopping along.

A happy marriage is a long conversation which always seems too short.

A marriage without conflicts is almost as inconceivable as a nation without crises.

We appreciate frankness from those who like us. Frankness from others is called insolence.

Conversation would be vastly improved by the constant use of four simple words: I do not know.

A successful marriage is an edifice that must be rebuilt every day.

Most of the world’s problems are caused by people who made education compulsory, but personal development optional. Because of them, we have many intelligent people who lack good characters.

Teach us to number our days, that we may gain a heart of wisdom.

In order to succeed, people need a sense of self-efficacy, to struggle together with resilience to meet the inevitable obstacles and inequities of life.

At times anger will trigger harsh words. After a cooling the ability to speak from the heart with love and compassion.

Habit is a second nature that destroys the first. But what is nature? Why is habit not natural? I am very much afraid that nature itself is only a first habit, just as habit is a second nature.

Only in this town, where we make an industry out of creating euphemisms, can we have enough sugar to sugarcoat this nonsense.

Today I stand before the world organization which has succeeded to the mantle discarded by its discredited predecessor.

It's just that it's mind-boggling to me how many people I encounter every day who are struggling to subsist on a diet of bad advice about fake solutions to nonexistent problems.

Work without hope draws nectar in a sieve, And hope without an object cannot live.

The development of a rational view of the nature of catalysis was thus absolutely dependent on the creation of the concept of the rate of chemical reaction.