The man with a clear ...

The man with a clear conscience probably has a poor memory.
The man with a clear conscience probably has a poor memory.

More phrases

If a man watches three football games in a row, he should be declared legally dead.
The truth is not for all men, but only for those who seek it.
A man must be big enough to admit his mistakes, smart enough to profit from them, and strong enough to correct them.
Each man has his own vocation; his talent is his call. There is one direction in which all space is open to him.
The superior man is modest in his speech but exceeds in his actions.

Quotes from the same author

The only thing to do with good advice is to pass it on. It is never of any use to oneself.
The aim of life is self-development. To realize one's nature perfectly - that is what each of us is here for.
Be yourself; everyone else is already taken.
Laughter is not at all a bad beginning for a friendship, and it is far the best ending for one.
The smallest act of kindness is worth more than the grandest intention.