Talents - COL 363

I just finished devotions and came across some powerful statements from the chapter on "Talents" in the book Christ Object Lessons, p. 363.

The Lord measures with exactness every possibility for service. The unused capabilities are as much brought into account as are those that are improved. For all that we might become through the right use of our talents God holds us responsible. We shall be judged according to what we ought to have done, but did not accomplish because we did not use our powers to glorify God. Even if we do not lose our souls, we shall realize in eternity the result of our unused talents. For all the knowledge and ability that we might have gained and did not, there will be an eternal loss.
But when we give ourselves wholly to God and in our work follow his directions, He makes Himself responsible for its accomplishment. He would not have us conjecture as to the success of our honest endeavors. Not once should we even think of failure. We are to co-operate with One who knows no failure.
We should not talk of our own weakness and inability. This is a manifest distrust of God, a denial of His word. When we murmur because of our burdens, or refuse the responsibilities He calls upon us to bear, we are virtually saying that He is a hard master, that He requires what He has not given us power to do.

Are those not powerful and yet grave statements? What do you think?