“Previous generations were able to look upon intellectual and cultural progress as simply the inherited fruits of their forebears’ labours, which made life easier and more beautiful for them. But the calamities of our times show us that this was a fatal illusion. We see now that the greatest efforts are needed if this legacy of humanity’s is to prove a blessing not a curse. For whereas formerly it was enough for a man to have freed himself to some extent from personal egotism to make him a valuable member of society, to-day he must also be required to overcome national and class egotism.