Qui dedit benificium taceat; narret qui accepit - Let him who has done a good deed be silent; let him who has received it tell it. (Seneca)
Qui desiderat pacem, praeparet bellum - Let him who wishes for peace prepare for war. (Vegetius)
Qui docet discit - He who teaches learns

Qui dormit, non peccat

One who sleeps doesn't sin

Qui habet aures audiendi audiat - He who has ears, let him understand how to listen
Qui ignorabat, ignorabitur - One who is ignorant will remain unnoticed
Qui me amat, amet et canem meum - Love me, love my dog
Qui multum habet, plus cupit - He who has much desires more. (Seneca)
Qui nimium probat, nihil probat - One who proves too much, proves nothing
Qui non est hodie cras minus aptus erit - He who is not prepared today will be less so tomorrow. (Ovid)