There are none so blind as those who will not see. The most deluded people are those who choose to ignore what they already know.
When the sunne shineth, make hay.
And while I at length debate and beate the bush, There shall steppe in other men and catch the burdes.
No man loveth his fetters, be they made of gold.
Men say, kinde will creepe where it may not goe.
There is no fool to the old fool.