“But I do not pretend that I should ever have suspected how poor a record of the mutation of life, the best preserved geological section presented, had not the difficulty of our not discovering innumerable transitional links between the species which appeared at the commencement and close of each formation, pressed so hardly on my theory.” Origin of Species by Charles Darwin
Translation: “It kills me that we can’t find any evidence to support my theories but I’m going to go ahead and believe them anyway.”