“Tri chysir henaint: tân, te a thybaco.”

Translation: “Three comforts of old age: fire, tea and tobacco.”

“Dywed yn dda am dy gyfaill, am dy elyn dywed ddim.”

Translation: “Speak well of your friend; of your enemy say nothing.”

“Deuparth gwaith yw ei ddechrau.”

Translation: “Starting the work is two thirds of it.”

Source: http://www.theapricity.com/forum/showthread.php?2364-Some-Welsh-Proverbs