This quote was used by the Mayor of Amsterdam, Gijsbert van Hall, following a street demonstration in 1966, as reported by The New York Times, April 3, 1966, p. 16
Do not seek evil gains evil gains are the equivalent of disaster.
Before the gates of excellence the high gods have placed sweat long is the road thereto and rough and steep at first but when the heights are reached, then there is ease, though grievously hard in the winning.
He for himself weaves woe who weaves for others woe, and evil counsel on the counselor recoils.
Man's chiefest treasure is a sparing tongue.
We know how to speak many falsehoods that resemble real things, but we know, when we will, how to speak true things.
If thou shouldst lay up even a little upon a little, and shouldst do this often, soon would even this become great.
Invite the man that loves thee to a feast, but let alone thine enemy.
Even though it's hard, it's easy.
The man who procrastinates struggles with ruin.
The man who does evil to another does evil to himself, and the evil counsel is most evil for him who counsels it.
I see no hope for the future of our people if they are dependent on the frivolous youth of today, for certainly all youth are reckless beyond words. When I was a boy, we were taught to be discrete and respectful of elders, but the present youth are exceedingly wise and impatient of restraint.
Work is no disgrace: it is idleness which is a disgrace
A bad neighbor is a misfortune, as much as a good one is a great blessing
He's only harming himself who's bent upon harming another