If I am fool, it is, at least, a doubting one; and I envy no one the certainty of his read more

If I am fool, it is, at least, a doubting one; and I envy no one the certainty of his self-approved wisdom.

When unhappy, one doubts everything; when happy, one doubts
nothing.

When unhappy, one doubts everything; when happy, one doubts
nothing.

Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her read more

Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous.

To be once in doubt
Is once to be resolved.

To be once in doubt
Is once to be resolved.

I kept on digging the hole deeper and deeper looking for the
treasure chest until I finally lifted my read more

I kept on digging the hole deeper and deeper looking for the
treasure chest until I finally lifted my head, looked up and
realized that I had dug my own grave.

I invented the cordless extension cord.

I invented the cordless extension cord.

Truth is beautiful, without doubt; but so are lies.

Truth is beautiful, without doubt; but so are lies.

A weak man has doubts before a decision; a strong man has them afterwards.

A weak man has doubts before a decision; a strong man has them afterwards.

Just think of the tragedy of teaching children not to doubt.

Just think of the tragedy of teaching children not to doubt.