(noun) That which is permanent or invariable.
"All of life is a constant education."
"We are constantly invited to be what we are."
"Therefore, just as water retains no constant shape, so in warfare there are no constant conditions."
"Forgiveness is not an occasional act, it is a constant attitude."
"Be slow to fall into friendship, but when you are in, continue firm and constant."
"You are constantly invited to be what you are."