with all one's heart

Simon May, a visiting professor of philosophy at King's College in London, credits the Judeo-Christian tenet of loving God with all one's heart, soul and strength as establishing love as the most important thing in life.

One wishes with all one's heart that that lunatic would die.

He replied, 'To love God with all one's heart, Christ helping us.'

It seems what one desires with all one's heart for a long time finally comes to pass in some fashion or other.

I thought to love mutually with all one's heart was only for ordinary people like we others; but a great genius like you only tolerates one love, and sometimes is pleased without really returning it.