Without God You Can Do Nothing

St John of the Cross 

Let those, then, who are singularly active, who think they can win the world with their preaching and exterior works, observe here that they would profit the Church and please God much more, not to mention the good example they would give, were they to spend at least half of this time with God In prayer. ...

Without prayer, they would do a great deal of hammering but accomplish little, and sometimes nothing, and even at times cause harm. God forbid that the salt should begin to lose its savor (Mt 5:13), for however much they may appear to achieve externally, they will in substance be accomplishing nothing; it is beyond doubt that good works can be performed only by the power of God.

The Spiritual Canticle 29.3