with all one's strength

She added that she and French President Francois Hollande were working "with all one's strength" to urge Ukraine and Russia to implement the so-called Minsk ceasefire agreement despite all the difficulties.

One has to avoid, with all one’s strength … becoming a part of it.

Each of the working-people, male and female, knows this: even the children know that this is an important business and that one ought to work with all one's strength, carry a jug with kvas for the father to the mowing-place, and, shifting it from one hand to another, run barefoot as quickly as possible, a distance of perhaps a mile and a half from the village, in order to be in time for dinner, that father may not grumble.

To be responsible, and to feel that one is responsible, is equivalent to looking at one's whole life as a vast debt, which one is bound to strive with all one's strength to pay off; is equivalent to surveying one's momentary task on earth in the whole range of its significance, importance, and periphery, in order then to raise one's own inherent possibilities and capacities to their most complete mastery.

To pull with all one's strength for five minutes against what was practically a dead weight without the slightest chance to relax a muscle was a severe test of endurance.