Charles H. Spurgeon on Psalms 103:14

For he knoweth our frame. He knows how we are made, for he made us. Our make and build, our constitution and temperament, our prevailing infirmity and most besetting temptation he well perceives, for he searches our inmost nature. He remembereth that we are dust. Made of dust, dust still, and ready to return to dust. We have sometimes heard of "the Iron Duke, " and of iron constitutions, but the words are soon belied, for the Iron Duke is dissolved, and other men of like rigour are following to the grave, where "dust to dust" is an appropriate requiem. We too often forget that we are dust, and try our minds and bodies unduly by excessive mental and bodily exertion, we are also too little mindful of the infirmities of others, and impose upon them burdens grievous to be borne; but our heavenly Father never overloads us, and never fails to give us strength equal to our day, because he always takes our frailty into account when he is apportioning to us our lot. Blessed be his holy name for this gentleness towards his frail creatures.