...the scepticism of men, who do not truly believe in new things unless they have actually had personal experience of them.

Men will not accept truth at the hands of their enemies, and truth is seldom offered to them by their friends

We learn from experience that men never learn anything from experience.

Some men <i>think</i> because they're afraid to <i>do</i>.

No man likes to have his intelligence or good faith questioned, especially if he has doubts about it himself.

It is too bad that men cannot be trusted unless they are watched.

Never trust the advice of a man in difficulties.

When men are easy in their circumstances, they are naturally enemies to innovations.

The risk is too great. A man cannot place too much faith in any one thing, neither a woman, nor a horse, nor a weapon, nor any single thing.

A body of men holding themselves accountable to nobody ought not to be trusted by anybody.

never trust the words of a man who is not free.

Men despise religion. They hate it and are afraid it may be true.

I know that most men, including those at ease with problems of the greatest complexity, can seldom accept even the simplest and most obvious truth if it be such as would oblige them to admit the falsity of conclusions which they have delighted in explaining to colleagues, which they have proudly taught to others, and which they have woven, thread by thread, into the fabric of their lives.

...the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it.